Critical appraisal:Liu S, Li Y, Yang H, Li A, Han Z, Wang X, et al 2016 4

Risk of bias assessment: cohort study

Subject selection

"New technology" group

Representative of eligible patients.

Comparison group

Representative of eligible patients

Comparability of groups on demographic characteristics and clinical features

Comparable

Measurement of outcomes

Outcome measures blind to technology used

No, but objective measures used

Same method of measurement used across comparison groups

Yes

Completeness of follow-up

Was follow-up complete and were all patients included in the analysis?

Yes (follow-up >95%) or survival analysis using all patients

Overall risk of bias

Low risk of bias

Additional comments: Please replace this text and include any additional comments in regards to your risk of bias rating

This appraisal has been completed.

Article

Liu S, Li Y, Yang H, Li A, Han Z, Wang X, et al. Retroflexion-assisted endoscopic mucosal resection: a useful and safe method for removal of low rectal laterally spreading tumors. Surg Endosc 2016 Jan;30(1):139-46 Available from: http://www.ncbi.nlm.nih.gov/pubmed/25807863.

Assigned to

User:Cecilia.taing

Topic area

Guidelines:Colorectal cancer/Colonoscopy surveillance

Clinical question

• What is the appropriate colonoscopic surveillance after the removal of large sessile or laterally spreading adenomas?

Form

Form:Quality appraisal cohort

Outcomes

complication

Section below only relevant for Cancer Council Project Officer

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